The call prompted the evacuation or lockdown of all 35 elementary schools in the county. No devices were found, and the call was determined to be a hoax.

The person of interest, who has not been named, was seen on surveillance camera purchasing a cellphone from a Dollar General store in Casselberry less than one hour before the hoax call was made, investigators said. He is not considered a suspect.

According to Florida law, this kind of bomb threat is a second-degree felony punishable by up to 15 years in prison, plus a fine to cover the cost of the law enforcement response.

Anyone with information is urged to call CrimeLine at 1-800-423-TIPS or the Seminole County Sheriff's Office at 407-665-6650.